Spraying Experiments in Nebraska 
23 
At South Omaha (table 10), a power sprayer of 10- to 12- 
gallons-to-the-minute capacity was used. At the petal-fall spray, 
coarse mist nozzles were used with a pressure of 225 to 250 pounds. 
Two men sprayed from the tower and one from the ground. 
The efficiency of the schedule was, for plat No. 3, 97.7 per cent; 
No. 1, 94.7 per cent; No. 2, 93.5 per cent; No. 4, 91.3 per cent; and 
No. 5, 70 per cent. Approximately 3 per cent of the ' 'worms" 
found in the fruit entered at the calyx end. 
The low percentage of wormy fruit in the check trees was due 
to the fact that Mr. Beavers has been spraying thoroly for several 
seasons past. Two trees were selected in an orchard which has 
never been sprayed, one-half mile from Mr. Beavers' orchard, and 
the fruit examined . The Ben Davis apples were 60 per cent wormy 
and the Jonathan 49 per cent wormy. 
Table 11 — Effects of various commercial arsenates of lead 
Total 
Treatment 
Applica- 
number 
Codling 
Per 
Effi- 
tions 
picked 
moth 
cent 
ciency 
apples 
lyio 
1 
2-50 Herman's calcite 
1-2-3-4 
1,365 
138 
10.11 
69 
2 
1^-50 Ansbacher powdered 
arsenate of lead 
1-2-3-4 
1,766 
190 
10.76 
68 
8 
2^-50 Ansbacher powdered 
arsenate of lead 
1-2-3-4 
4,674 
467 
9.99 
70 
4 
2-50 DeVoe & Reynoids 
paste arsenate of lead .... 
1-2-3-4 
3,741 
386 
10.31 
69 
5 
2-50 Sherwin-Williams 
paste arsenate of lead .... 
1-2-3-4 
2,976 
352 
11.83 
67 
6 
2-50 Grasselli paste 
arsenate of lead 
1-2-3-4 
5,416 
676 
12.46 
63 
7 
2-50 Rex paste arsenate of 
lead 
1-2-3-4 
2,761 
331 
11.99 
64 
8 
3-50 Rex paste arsenate of 
lead 
1-2-3-4 
1,896 
231 
12.18 
63 
9 
2-50 Hemingway's paste 
arsenate of lead 
1-2-3-4 
1,241 
143 
11.52 
65 
10 
Check 
no spray 
3,530 
1,172 
33.2 
1915 
1 
1^-50 Sherwin-Williams 
powdered arsenate of lead . 
1-2-3-4 
12,783 
381 
2.12 
93.5 
2 
li-50 Corona powdered 
arsenate of lead 
1-2-3-4 
6,051 
187 
3.09 
90.5 
3 
2^-50 Rex paste arsenate 
of lead 
1-2-3-4 
10,774 
132 
1.22 
96 
4 
Check 
no spray 
11,633 
3,750 
32.24 
